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NSR database version of May 10, 2024.

Search: Author = A.A.Dzhioev

Found 26 matches.

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2023KO22      Bull.Rus.Acad.Sci.Phys. 87, 1098 (2023)

N.D.Kovrizhnykh, Yu.Ts.Oganessian, V.K.Utyonkov, F.Sh.Abdullin, S.N.Dmitriev, A.A.Dzhioev, D.Ibadullayev, M.G.Itkis, A.V.Karpov, D.A.Kuznetsov, O.V.Petrushkin, A.V.Podshibiakin, A.N.Polyakov, A.G.Popeko, I.S.Rogov, R.N.Sagaidak, L.Schlattauer, V.D.Shubin, M.V.Shumeiko, D.I.Solovyev, Yu.S.Tsyganov, A.A.Voinov, V.G.Subbotin, A.Yu.Bodrov, A.V.Sabelnikov, A.V.Khalkin

First Experiment at the Super Heavy Element Factory: New Data from the 243Am + 48Ca Reaction

RADIOACTIVITY 286,287,288,289Mc(α), 268Db(SF), (α), 264Lr, 279Rg(SF) [from 243Am(48Ca, X), E=239-259 MeV]; measured decay products, Eα, Iα; deduced α-particle energies, branches, T1/2, σ. The new separator DGFRS-2 and cyclotron DC280 of the SHE Factory at FLNR JINR.

doi: 10.3103/S106287382370291X
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2022DZ03      Physics of Part.and Nuclei 53, 1051 (2022)

A.A.Dzhioev, A.I.Vdovin

Superoperator Approach to the Theory of Hot Nuclei and Astrophysical Applications. III: Neutrino-Nucleus Reactions in Stars

NUCLEAR REACTIONS 52Cr(ν, ν'), E<40 MeV; 56Fe, 82Ge(ν, X), E<100 MeV; calculated σ within the quasiparticle random phase approximation (QPRA) for multipole nucleon current operators.

doi: 10.1134/S106377962206003X
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2022OG08      Phys.Rev. C 106, 064306 (2022)

Yu.Ts.Oganessian, V.K.Utyonkov, N.D.Kovrizhnykh, F.Sh.Abdullin, S.N.Dmitriev, A.A.Dzhioev, D.Ibadullayev, M.G.Itkis, A.V.Karpov, D.A.Kuznetsov, O.V.Petrushkin, A.V.Podshibiakin, A.N.Polyakov, A.G.Popeko, I.S.Rogov, R.N.Sagaidak, L.Schlattauer, V.D.Shubin, M.V.Shumeiko, D.I.Solovyev, Yu.S.Tsyganov, A.A.Voinov, V.G.Subbotin, A.Yu.Bodrov, A.V.Sabelnikov, A.V.Khalkin, K.P.Rykaczewski, T.T.King, J.B.Roberto, N.T.Brewer, R.K.Grzywacz, Z.G.Gan, Z.Y.Zhang, M.H.Huang, H.B.Yang

New isotope 286Mc produced in the 243Am + 48Ca reaction

NUCLEAR REACTIONS 243Am(48Ca, X)288Mc/289Mc, 243Am(48Ca, 2n), (48Ca, 3n), (48Ca, 4n), (48Ca, 5n), E=242.2, 250.8, 259.1 MeV; measured reaction products, evaporation residues (ER), Eα, Iα, fission fragments, (SF), (SF)α-coin, (ER)α-coin, αα-coin; deduced σ(E) for superheavy nuclei production. Gas-filled separator DGFRS-2 at the DC280 cyclotron (SHE Factory at JINR). Measurements with double-sided silicon strip detectors (DSSDs), single-sided silicon-strip detectors (SSSDs) and multiwire proportional chambers (MWPCs).

RADIOACTIVITY 286,287,288Mc, 289Mc, 282Nh, 283Nh, 284Nh, 285Nh, 278,280Rg, 274,275,276Mt, 270,271,272Bh, 268Db(α); 279,281Rg, 266,267,268Db, 264Lr(SF) [from 243Am(48Ca, xn), E=E=242.2, 250.8, 259.1 MeV]; measured Eα, ESF; deduced T1/2. 268Db; deduced α/SF branching ratio. 286Mc; deduced new isotope. Comparison of deduced half-lives with theoretical predictions.

doi: 10.1103/PhysRevC.106.064306
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2020DZ04      Phys.Atomic Nuclei 83, 143 (2020)

A.A.Dzhioev, S.V.Sidorov, A.I.Vdovin, T.Yu.Tretyakova

Tensor Interaction Effects on Stellar Electron Capture and Beta-Decay Rates

doi: 10.1134/S106377882002009X
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2020FI02      Phys.Rev. C 101, 025804 (2020)

T.Fischer, G.Guo, A.A.Dzhioev, G.Martinez-Pinedo, M.-R.Wu, A.Lohs, Y.-Z.Qian

Neutrino signal from proto-neutron star evolution: Effects of opacities from charged-current-neutrino interactions and inverse neutron decay

NUCLEAR REACTIONS 1H(ν-bar, e+)n, 1n(ν, e-)p, E<100 MeV; derived expressions for medium-dependent charged-current reactions in fully inelastic kinematics, including contribution from weak magnetism; implemented weak reaction rates in the supernova model; simulated core-collapse supernova explosions and proto-neutron star (PNS) deleptonization; analyzed subsequent neutrino signal depending on the treatment of weak interactions; investigated nuclear medium dependence at the mean-field level, with the inverse neutron decay as new opacity source; calculated complete nucleosynthesis outcome from core-collapse supernova explosion simulation.

doi: 10.1103/PhysRevC.101.025804
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2019DZ02      Phys.Rev. C 100, 025801 (2019)

A.A.Dzhioev, A.I.Vdovin, Ch.Stoyanov

Thermal quasiparticle random-phase approximation calculations of stellar electron capture rates with the Skyrme effective interaction

NUCLEAR REACTIONS 56Fe, 78Ni(e, X), E=5-40 MeV; calculated electron capture (EC) rates and σ(E) on nuclei in hot stellar environments, GT strengths vs transition energy, and σ(E) vs temperature. Calculations based on the Donnelly-Walecka multipole expansion method, with the spectral functions calculated using the self-consistent thermal quasiparticle random-phase approximation (TQRPA) with the Skyrme effective interaction: SkM*, SGII, and SLy4. Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.100.025801
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2019GR06      J.Phys.(London) G46, 075101 (2019)

E.T.Gregor, N.N.Arsenyev, M.Scheck, T.M.Shneidman, M.Thurauf, C.Bernards, A.Blanc, R.Chapman, F.Drouet, A.A.Dzhioev, G.de France, M.Jentschel, J.Jolie, J.M.Keatings, T.Kroll, U.Koster, R.Leguillon, K.R.Mashtakov, P.Mutti, D.O'Donnell, C.M.Petrache, G.S.Simpson, J.Sinclair, J.F.Smith, T.Soldner, P.Spagnoletti, A.V.Sushkov, W.Urban, A.Vancraeyenest, J.R.Vanhoy, V.Werner, K.O.Zell, M.Zielinska

Decay properties of the 3-1 level in 96Mo

NUCLEAR REACTIONS 95Mo(n, 2γ), E cold; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced γ-ray energies and intensities, B(Eλ). Comparison with QRPA results.

NUCLEAR STRUCTURE 92,94,96,98Mo; calculated energy levels, B(Eλ) using QRPA approach.

doi: 10.1088/1361-6471/ab0b5e
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2017DZ01      Acta Phys.Pol. B48, 667 (2017)

A.A.Dzhioev, A.I.Vdovin

Neutrino Processes with Hot Nuclei in Supernovae

NUCLEAR STRUCTURE 56Fe, 82Ge; calculated β-decay GT strength functions for nonzero temperature.

NUCLEAR REACTIONS 56Fe, 82Ge(ν, e-), (ν-bar, e+).E=0-30 MeV;calculated σ at different finite temperature and different chemical potentials using TQRPA (Thermo Field Dynamics Formalism) extended self-consistent Skyrme-QRPA with different Skyrme forces. Compared with published results using LSSM (Large-Scale Shell Model).

doi: 10.5506/APhysPolB.48.667
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2016DZ02      Phys.Rev. C 94, 015805 (2016)

A.A.Dzhioev, A.I.Vdovin, G.Martinez-Pinedo, J.Wambach, Ch.Stoyanov

Thermal quasiparticle random-phase approximation with Skyrme interactions and supernova neutral-current neutrino-nucleus reactions

NUCLEAR REACTIONS 56Fe, 82Ge(ν, ν'), E<20 MeV; calculated inelastic neutral-current neutrino scattering σ(E) at supernova conditions, normalized spectra of outgoing neutrinos, normalized spectra of neutrino-antineutrino pairs, energy centroid for the spectrum of emitted neutrinos as a function of temperature. 56Fe, 82Ge; calculated ground-state and total GT0 strength distributions, energy centroid for the upward GT0 strength functions as function of temperature. Thermal quasiparticle random-phase approximation combined with the Skyrme energy density functional method (Skyrme-TQRPA). Comparison with results from hybrid approach of shell-model and RPA calculations.

doi: 10.1103/PhysRevC.94.015805
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2015DZ04      Phys.Rev. C 92, 045804 (2015)

A.A.Dzhioev, A.I.Vdovin, J.Wambach

Neutrino absorption by hot nuclei in supernova environments

NUCLEAR REACTIONS 56Fe, 82Ge(ν, e-), (ν-bar, e+), E<50 MeV; calculated σ(E) for neutrino and antineutrino absorption reactions in supernova environments, strength distribution of allowed Gamow-Teller (GT) transitions using proton-neutron QRPA extended to finite temperatures within the thermofield dynamics (TFD) formalism. Comparison with other theoretical calculations.

doi: 10.1103/PhysRevC.92.045804
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2014DZ01      Phys.Rev. C 89, 035805 (2014)

A.A.Dzhioev, A.I.Vdovin, J.Wambach, V.Yu.Ponomarev

Inelastic neutrino scattering off hot nuclei in supernova environments

NUCLEAR REACTIONS 56Fe, 82Ge(ν, ν'), E<60 MeV; calculated finite temperature σ(E) accounting for allowed and forbidden transitions by thermal QRPA, temperature evolution of Gamow-Teller (GT) strengths. Comparison with hybrid large-scale shell-model and RPA calculations.

doi: 10.1103/PhysRevC.89.035805
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2010DZ02      Phys.Rev. C 81, 015804 (2010)

A.A.Dzhioev, A.I.Vdovin, V.Yu.Ponomarev, J.Wambach, K.Langanke, G.Martinez-Pinedo

Gamow-Teller strength distributions at finite temperatures and electron capture in stellar environments

NUCLEAR STRUCTURE 54,56Fe, 76,78,80Ge; calculated Gammow-Teller strength distributions, electron capture rates, strength distributions for first forbidden transitions, and occupation numbers in hot nuclei in stellar environments using thermal quasiparticle random-phase approximation (TQRPA) model. Comparison with experimental data and large-scale shell-model (LSSM) calculations.

doi: 10.1103/PhysRevC.81.015804
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2010VD01      Physics of Part.and Nuclei 41, 1127 (2010)

A.I.Vdovin, A.A.Dzhioev

Thermal Bogoliubov transformation in nuclear structure theory

doi: 10.1134/S1063779610070336
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2009DZ01      Bull.Rus.Acad.Sci.Phys. 73, 225 (2009); Izv.Akad.Nauk RAS, Ser.Fiz. 73, 236 (2009)

A.A.Dzhioev, A.I.Vdovin, V.Yu.Ponomarev, J.Wambach

Thermal effects on electron capture for neutron-rich nuclei

RADIOACTIVITY 76Ge(EC); calculated electron capture cross sections as a function of electron energy.

doi: 10.3103/S106287380902021X
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2009DZ03      Phys.Atomic Nuclei 72, 1320 (2009); Yad.Fiz. 72, 1373 (2009)

A.A.Dzhioev, A.I.Vdovin, V.Yu.Ponomarev, J.Wambach

Charge-exchange transitions in hot nuclei

NUCLEAR STRUCTURE 80Ge; calculated single-particle wave functions and energies, strength distribution S(E) of allowed pn transitions.

doi: 10.1134/S1063778809080079
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2009DZ04      Int.J.Mod.Phys. E18, 1535 (2009)

A.A.Dzhioev, A.I.Vdovin

On the TFD treatment of collective vibrations in hot nuclei

doi: 10.1142/S0218301309013695
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2008DZ02      Bull.Rus.Acad.Sci.Phys. 72, 269 (2008); Izv.Akad.Nauk RAS, Ser.Fiz. 72, 294 (2008)

A.A.Dzhioev, A.I.Vdovin, V.Yu.Ponomarev, J.Wambach

Gamow-Teller resonance in hot nuclei and astrophysical applications

NUCLEAR STRUCTURE 56Fe; calculated EC and β- decay rates at stellar temperatures.

doi: 10.3103/S1062873808030015
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2008GO32      Bull.Rus.Acad.Sci.Phys. 72, 1553 (2008); Izv.Akad.Nauk RAS, Ser.Fiz. 72, 1639 (2008)

N.G.Goncharova, A.A.Dzhioev, N.D.Pronkina

Orbital twist M2 mode in the 1hω transitions from 1p-, sd-, and f2p-shell nuclei

doi: 10.3103/S1062873808110245
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2003GO36      Bull.Rus.Acad.Sci.Phys. 67, 744 (2003)

N.G.Goncharova, A.A.Dzhioev, N.D.Pronkina

Fragmentation sources of multipole excitations in 26Mg nucleus

NUCLEAR STRUCTURE 26Mg; calculated GDR strength distribution, isospin and configuration splitting effects. Particle-core coupling.

2003VD01      Yad.Fiz. 66, 1909 (2003); Phys.Atomic Nuclei 66, 1861 (2003)

A.I.Vdovin, A.A.Dzhioev, A.N.Storozhenko

Boson-Fermion Holstein-Primakoff Mapping at Nonzero Temperatures for the Example of the Lipkin Model

doi: 10.1134/1.1619497
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2002DZ02      Bull.Rus.Acad.Sci.Phys. 66, 19 (2002)

A.A.Dzhioev, N.G.Goncharova

Electroexcitation of Magnetic Quadrupole Resonances in 28Si and 32S Nuclei

NUCLEAR STRUCTURE 28Si, 32S; calculated magnetic quadrupole resonance form factors, excitation energy distributions.

2001GO32      Nucl.Phys. A690, 247c (2001)

N.G.Goncharova, A.A.Dzhioev

The Interplay of Spin and Orbital Currents in the Nuclear Response to Electroexcitation

NUCLEAR STRUCTURE 32S, 40Ca, 28Si; analyzed multipole resonance strength distributions.

doi: 10.1016/S0375-9474(01)00951-4
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2001GO34      Yad.Fiz. 64, No 7, 1251 (2001); Phys.Atomic Nuclei 64, 1174 (2001)

N.G.Goncharova, A.A.Dzhioev

Structure of Nuclear Multipole Resonances as a Function of Momentum Transfer

NUCLEAR STRUCTURE 28Si, 32S, 40Ca; calculated isovector dipole form factors vs momentum transfer, resonance energies. Particle-core-coupling shell model.

doi: 10.1134/1.1389538
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2000GO36      Bull.Rus.Acad.Sci.Phys. 64, 139 (2000)

N.G.Goncharova, A.A.Dzhioev

Structure of Isovector EJ Resonances in 1d2s-Shell Nuclei

NUCLEAR STRUCTURE 28Si; calculated longitudinal, transverse form factors for single-particle E1, E3, and E5 resonances.

2000GO45      Yad.Fiz. 63, No 10, 1836 (2000); Phys.Atomic Nuclei 63, 1747 (2000)

N.G.Goncharova, A.A.Dzhioev, V.V.Shershakov

Effect of the Interference between Orbital and Spin Currents on Form Factors for Nuclear Electroexcitation

doi: 10.1134/1.1320144
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2000GO52      Bull.Rus.Acad.Sci.Phys. 64, 1806 (2000)

N.G.Goncharova, A.A.Dzhioev

Electric and Magnetic Electroexcitation Resonances of sd-Shell Nuclei

NUCLEAR STRUCTURE 28Si, 40Ca; calculated multipole resonance strengths, form factors; deduced orbital and spin interference effects.

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